# Relationship history for MSHA mine 3401742

Current hierarchy: **William J  Cooper → Farrell-Cooper Mining Company → Cavanal West Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** William J  Cooper → Cavanal West Mine; 1975-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hudson Mining Company Inc → Cavanal West Mine; 1991-01-01 to 1993-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Hudson A Z Et Al → Cavanal West Mine; 1991-01-01 to 1993-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Hudson A Z Et Al → Hudson Mining Company Inc; 1991-01-01 to 1993-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Mountain Minerals Inc → Cavanal West Mine; 1993-10-20 to 1994-06-09; source msha-controller-operator-history
- **controller_controls_mine:** Bakke Dennis → Cavanal West Mine; 1993-10-20 to 1994-06-09; source msha-controller-operator-history
- **controller_controls_operator:** Bakke Dennis → Mountain Minerals Inc; 1993-10-20 to 1994-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Farrell-Cooper Mining Company → Cavanal West Mine; 1994-06-10 to 2018-02-07; source msha-controller-operator-history
- **controller_controls_operator:** William J  Cooper → Farrell-Cooper Mining Company; 1994-06-10 to 2018-02-07; source msha-controller-operator-history
- **operator_operates_mine:** Brazil Creek Minerals → Cavanal West Mine; 2018-02-08 to 2018-03-08; source msha-controller-operator-history
- **controller_controls_mine:** William J  Cooper → Cavanal West Mine; 2018-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William J  Cooper → Brazil Creek Minerals; 2018-02-08 to 2018-03-08; source msha-controller-operator-history
- **operator_operates_mine:** Farrell-Cooper Mining Company → Cavanal West Mine; 2018-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William J  Cooper → Farrell-Cooper Mining Company; 2018-03-09 to current/open; source msha-controller-operator-history